Adjustable connection for stamping-presses.



W. H. WELCH.

ADJUSTABLE CONNECTION FOR STAMPING PRESSES.

APPLICATION FILED JUNE 29,1914.

1,148,641. Patented Aug. 3, 1915.

7 6; Q; 2 E j 6 4- la a 4 Swueubom Wm. H. WELCI'I.

WILLIAM H. WELCI-I, OF CLEVELAND, OHIO, ASSIGNOR TO THE CLEVELANDMACHINE & MFG. COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

ADJUSTABLE CONNECTION FOR STAMPING-PRESSES.

Specification of Letters Patent.

Patented. Aug. 3, 1915.

Application filed June 29, 1914'. Serial No. 848,030.

To all whom it may concern:

Be it known that 1, WILLIAM H. WELCH, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Adjustable Connectionsfor Stamping-Presses, of which the following is a specification.

My invention relates to improvements in adjustable connections forstamping presses, the primary object of the invention being to provide agenerally improved adjustable connection for power stamping presseswhereby a quick adjustment is facilitated between the actuating crankand the main cross head or slide and the general strength and stabilityof the connecting parts greatly increased.

A still further object is to provide an ad justable' connection havingimproved connecting bearings at each end and which by reason of suchconstruction and the general arrangement and combination of parts,hereinafter more fully referred to, enable thesame to be given greaterrange of ad justments between the crank shaft and the cross head orslide thereby greatly increasing the usefulness of the press as awholeby simplifying the construction of the base and eliminating the useof stationary filler blocks for building up the base carrying the fixeddies as now frequently resorted to in power presses having the ordinarysingle threaded connecting rod the latter having a limited length ofadjustment. In such commonly employed single screw threaded connectingrod, as is well known to those skilled in the art to which thisinvention relates, when the same is lengthened extensively suchconnection rod is liable to buckle, or in other words,-the centralunsupported portion thereof frequently bows out laterally to the frontor rear when the cross head or die carrying block strikes the article tobe stamped, this being particularly manifest in large heavy stampings,the greatfriction and side thrust on the crank at this moment alsoaiding or accelerating such bowing or buckling of the single adjustingrod connection above referred to.

By the use of my improved adjustable connection the above mentionedobjection or hearing liability is obviated or eliminated by theprovision of two adjustable connecting rods threaded in the crankbearing or block carried by the crank pin or eccentric of the crank ordriving shaft, the lower ends of the adjustable connecting rods beingmounted in a bearing head at opposite sides of the pivoted connection ofsaid bearing head with the cross head or slide and in line with themotion of the actuating crank. Suitable actuating mechanism is alsoprovided for simultaneously operating or revolving the adjustableconnecting rods whereby the latter may be adjusted.

With the above mentioned and other ends in view, the invention consistsin the novel construction, arrangement, and combination of parts,hereinafter described, illustrated in one of its embodiments in theaccompanying drawings, and particularly pointed out in the appendedclaims.

Referring to the drawings, forming a part of this specification, Figure1, is a side elevation, partly in section, of an adjustable connectionconstructed in accordance with my invention. Fig. 2, a horizontal crosssectional view taken on line 2--2 of Fig. 1.

Similar numerals of reference designate like parts throughout all thefigures of the drawings- For the purposes hereinbefore mentioned andexplained, I provide two adjustable connecting rods 1, threaded in acrank bearing or block 2, carried by a crank pin or eccentrio 3, of acrank or driving shaft 3*. The

parts 2, 3, and 3, may be of any suitable and convenient construction aslikewise the cross head or slide 5, to which the lower ends of theadjusting screws or rods 1, are pivotally attached by the meanshereinafter described.

The lower ends of the screw threaded adjusting rods or members 1, aremounted in a head t, which latter may be pivotally mounted and securedto the cross head or slide 5, in the usual manner, as for ex ample,bymeans of a segmental bearing portion seated within a socket 5, andconnected to the cross slide by means of a pivot bearing 5 mounted insuitable. lugs 5.

As a convenient means of mounting and connecting the lower ends of theadjustable connecting rods 1, to the bearing head 4, at opposite sidesof the pivot bearing portion 5 thereof and in a plane parallel with themotion of the crank 3, above, the lower ends of said rods are providedwith enlarged or flanged bearing heads 1, seated in sockets l, andretained therein by means of flanged bearing sleeves or caps 6, whichlatter may be secured by means of cap screws 6*.

As a means of simultaneously operating or revolving the threadedconnecting or adjusting rods 1, the latter are provided with worm gears7, meshing at their inner'sides with a transversely extending worm 8, ona worm shaft 9, which latter may be mounted in any suitable andconvenient manner and may be extended to one side and operated by hand,if a small press, or if a large press, by suitable power driven gearingwhereby the connecting rods are simultaneously actuated for adjustingthe length of the adjustable connection a a whole in accordance with thethickness of the material to be operated upon as well as the dimensionsof the dies, etc., carried by the cross head or slide and the fixed orcooperating dies below.

' If the improved adjustable connection is used in a large press or inconnection with a cross head or slide of wide dimensions the worm shaft9, is extended and provided with a second worm meshing with a secondpair of worm gears carried by a second pair of connecting rods similarlymounted and connectedas shown most clearly in Fig. 2 of the drawings. Insuch instance the worm gears 7, and worms 8, are arranged in oppositerelation to each other and travel in the direction indicated by thearrows thereby relieving the worm shaft, 9, of any substantial endthrust, the resistance offered to the worms 8, by the two pairs of wormgears being such as to substantially balance the shaft as respects suchend thrust.

From the foregoing description, taken in connection with theaccompanying drawings, the operation and advantages of my invention willbe readily understood.

Having thus described one of the embodiments of my invention, What Iclaim and desire to secure by Letters Patent, is,'

1. In an adjustable connection, a crank, a slide, bearing memberstherefor, a pair of threaded connecting rods mounted in and carried bysaid bearing members in a plane parallel with the plane of motion ofsaid crank, and means for simultaneously rotating said connecting rods.

2. In an adjustable connection for stamping presses, the combinationwith a crank bearing, and a pivoted bearing head; of oppositely arrangedsimultaneously adjustable connecting rods carried thereby in a planeparallel with the plane of movement imparted to said bearing members.

3. In an adjustable connection, the combination with a' crank, a slide,and bearing members carried thereby; of oppositely disposedsimultaneously adjustable connecting rods carried by said bearingmembers in a plane parallel with the plane of motion imparted to thelatter.

4:. An adjustable connection for stamping presses, comprising acrank,a'fpivoted bearing head carried thereby, a pair of threaded .connectingrods carried by said bearing head, a bearing head connected to saidconnecting rods and means for simultaneously rotating said connectingrods.

5. An adjustable connection between a crank and a slide, comprising acrank bearing member, a bearingmember adapted to be pivoted to saidlide,-threaded connecting rods extending on opposite sides of said crankbetween said bearing members, and worm and worm drive mechanism forsimultarieously rotating said threaded connecting ro s.

6. An adjustable connection between a crank and a slide, comprising acrank bearing block, a movable bearinghead adapted to be connected tosaid slide and adapted to oscillate in a plane parallel to the plane ofmovement of said crank, adjustable connecting rods carried by said crankbearing block and said movable bearing headand movable in the plane ofoscillation of the latter, and means for simultaneously adjusting'saidadjustable connecting rods.

7. An adjustable connection between a crank and a slide, comprising'acrank bearing block, a pair of threaded connecting rods mounted therein,a bearing head adapted to I be pivotally connected to said slide andconnected to the lower ends of said threaded connecting rods, worm gearscarried by the latter, and a wormshaft provided with a worm interposedbetween and meshing with I therein front and back of a line from thecenter of the pivoted connection of said crank bearing member to thecenter of the pivoted connection of said slide bearing member.

10. In an adjustable connection between a crank and a slide, thecombination-with a crank and a crank bearing member; of two adjustingscrews mounted in said bearing In testimony whereof I have afiixed my1lglember on gpposilte siges 0(f1 the I lzlgnnection signature inpresence of two witnesses.

etween sai eran an sai cra bearing 1 member, worm gears carried by saidscrews, WILLIAM WELDH' and a worm interposed between said wormWitnesses:

gears whereby said actuating screws are si- J. W. HAYWARD,

multaneously rotated. O. C. BILLMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, .D. G.

